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题型:填空题 题类:常考题 难易度:普通
异分母分数加、减法(不含带分数) 6929
+= +=
={#blank#}1{#/blank#}
={#blank#}2{#/blank#}
+ = - = + = + =
- = 3- = - = - =
{#blank#}1{#/blank#}
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